Circuit board recycling equipment physical separation technology to achieve resource recycling
Release Time：2022-12-16 Source：Lithium battery recycling equipment Share：
With the widespread use of electronic and electrical products in recent years, the amount of electronic waste is also increasing day by day, coupled with the rapid replacement of electronic and electrical products, every short period of time will produce a full range of electronic and electrical products, people will discard a large number of electronic waste. This paper discusses the current situation of recycling waste printed circuit boards, explains what equipment is commonly used in mechanical processing technology, and analyzes the specific application of mechanical processing technology from three aspects. It is hoped that this paper will provide an effective way for the recycling of used printed circuit boards.
Circuit board recycling equipment in the mechanical processing technology applied in the process of material separation, should be based on the monomer dissociation of each material sorting. The degree of crushing will affect the energy consumption of the equipment, and also has a direct impact on the subsequent sorting process, so that the crushing is a very important part of the process. In this process, the commonly used crushing equipment mainly includes hammer crusher, hammer mill and rotary crusher. Through the study of the crushing process, it is found that when the metal is crushed to 0.66mm, it can be dissociated. The choice of crushing method and crushing equipment should be determined by the subsequent process.
Circuit board recycling equipment is mainly applied to the magnetic and electrical properties of the materials in the scrap circuit board and the material density for the sorting process. Magnetic and electrical separation of waste circuit board materials can be separated by using traditional magnetic separators, electrostatic sorting machines are also commonly used in the sorting process of waste circuit board sorting equipment, mainly used in non-ferrous metals and plastic sorting. Density separation technology is the completion of the decomposition of metal materials, the use of different materials, the weight of different materials to be separated. It is important to note that the variation in the weight of the metal and material in the alloy state does not have a significant effect on the sorting results. The equipment used for sorting the material density is a wind sorter and a cyclone separator, but the stability of these two types of equipment is poor and is influenced by the feeding situation.
Circuit board recycling equipment used in the processing of hammer mill, magnetic separation, airflow sorting and electrostatic sorting machine and other related technologies, the recycling technology of used printed circuit boards has been relatively mature, mainly including electronic components reuse process, metal, plastic and other components of the sorting and recycling process of these two processes. Yaxing circuit board recycling equipment using mechanical processing technology to complete the processing of used printed circuit boards, is currently an effective way.